{"id":1114,"date":"2019-01-08T14:04:48","date_gmt":"2019-01-08T06:04:48","guid":{"rendered":"https:\/\/blog.jsjs.org\/?p=1114"},"modified":"2019-01-08T14:04:48","modified_gmt":"2019-01-08T06:04:48","slug":"kafka%e5%85%a5%e9%97%a8%ef%bc%9a%e7%ae%80%e4%bb%8b%e3%80%81%e4%bd%bf%e7%94%a8%e5%9c%ba%e6%99%af%e3%80%81%e8%ae%be%e8%ae%a1%e5%8e%9f%e7%90%86%e3%80%81%e4%b8%bb%e8%a6%81%e9%85%8d%e7%bd%ae%e5%8f%8a","status":"publish","type":"post","link":"https:\/\/blog.jsjs.org\/?p=1114","title":{"rendered":"kafka\u5165\u95e8\uff1a\u7b80\u4ecb\u3001\u4f7f\u7528\u573a\u666f\u3001\u8bbe\u8ba1\u539f\u7406\u3001\u4e3b\u8981\u914d\u7f6e\u53ca\u96c6\u7fa4\u642d\u5efa\uff08\u8f6c\uff09"},"content":{"rendered":"
\u95ee\u9898\u5bfc\u8bfb\uff1a<\/div>\n
1.zookeeper\u5728kafka\u7684\u4f5c\u7528\u662f\u4ec0\u4e48\uff1f<\/div>\n
2.kafka\u4e2d\u51e0\u4e4e\u4e0d\u5141\u8bb8\u5bf9\u6d88\u606f\u8fdb\u884c\u201c\u968f\u673a\u8bfb\u5199\u201d\u7684\u539f\u56e0\u662f\u4ec0\u4e48\uff1f<\/div>\n
3.kafka\u96c6\u7fa4consumer\u548cproducer\u72b6\u6001\u4fe1\u606f\u662f\u5982\u4f55\u4fdd\u5b58\u7684\uff1f<\/div>\n
4.partitions\u8bbe\u8ba1\u7684\u76ee\u7684\u7684\u6839\u672c\u539f\u56e0\u662f\u4ec0\u4e48\uff1f<\/div>\n
\n\"\"<\/p>\n<\/div>\n

 <\/p>\n

\u4e00\u3001\u5165\u95e8<\/div>\n
\u00a0 \u00a0 1\u3001\u7b80\u4ecb<\/div>\n
\u00a0 \u00a0 Kafka is a distributed,partitioned,replicated commit logservice\u3002\u5b83\u63d0\u4f9b\u4e86\u7c7b\u4f3c\u4e8eJMS\u7684\u7279\u6027\uff0c\u4f46\u662f\u5728\u8bbe\u8ba1<\/a>\u5b9e\u73b0\u4e0a\u5b8c\u5168\u4e0d\u540c\uff0c\u6b64\u5916\u5b83\u5e76\u4e0d\u662fJMS\u89c4\u8303\u7684\u5b9e\u73b0\u3002kafka\u5bf9\u6d88\u606f\u4fdd\u5b58\u65f6\u6839\u636eTopic\u8fdb\u884c\u5f52\u7c7b\uff0c\u53d1\u9001\u6d88\u606f\u8005\u6210\u4e3aProducer,\u6d88\u606f\u63a5\u53d7\u8005\u6210\u4e3aConsumer,\u6b64\u5916kafka\u96c6\u7fa4\u6709\u591a\u4e2akafka\u5b9e\u4f8b\u7ec4\u6210\uff0c\u6bcf\u4e2a\u5b9e\u4f8b(server<\/a>)\u6210\u4e3abroker\u3002\u65e0\u8bba\u662fkafka\u96c6\u7fa4\uff0c\u8fd8\u662fproducer\u548cconsumer\u90fd\u4f9d\u8d56\u4e8ezookeeper\u6765\u4fdd\u8bc1\u7cfb\u7edf\u53ef\u7528\u6027\u96c6\u7fa4\u4fdd\u5b58\u4e00\u4e9bmeta\u4fe1\u606f\u3002<\/span><\/span><\/div>\n
<ignore_js_op>\"\"<\/div>\n
<\/div>\n
\u00a0 \u00a02\u3001Topics\/logs<\/div>\n
\u00a0 \u00a0 \u4e00\u4e2aTopic\u53ef\u4ee5\u8ba4\u4e3a\u662f\u4e00\u7c7b\u6d88\u606f\uff0c\u6bcf\u4e2atopic\u5c06\u88ab\u5206\u6210\u591a\u4e2apartition(\u533a),\u6bcf\u4e2apartition\u5728\u5b58\u50a8\u5c42\u9762\u662fappend log\u6587\u4ef6\u3002\u4efb\u4f55\u53d1\u5e03\u5230\u6b64partition\u7684\u6d88\u606f\u90fd\u4f1a\u88ab\u76f4\u63a5\u8ffd\u52a0\u5230log\u6587\u4ef6\u7684\u5c3e\u90e8\uff0c\u6bcf\u6761\u6d88\u606f\u5728\u6587\u4ef6\u4e2d\u7684\u4f4d\u7f6e\u79f0\u4e3aoffset\uff08\u504f\u79fb\u91cf\uff09\uff0coffset\u4e3a\u4e00\u4e2along\u578b\u6570\u5b57\uff0c\u5b83\u662f\u552f\u4e00\u6807\u8bb0\u4e00\u6761\u6d88\u606f\u3002\u5b83\u552f\u4e00\u7684\u6807\u8bb0\u4e00\u6761\u6d88\u606f\u3002kafka\u5e76\u6ca1\u6709\u63d0\u4f9b\u5176\u4ed6\u989d\u5916\u7684\u7d22\u5f15\u673a\u5236\u6765\u5b58\u50a8offset\uff0c\u56e0\u4e3a\u5728kafka\u4e2d\u51e0\u4e4e\u4e0d\u5141\u8bb8\u5bf9\u6d88\u606f\u8fdb\u884c\u201c\u968f\u673a\u8bfb\u5199\u201d\u3002<\/div>\n

 <\/p>\n

<ignore_js_op>\"\"<\/div>\n

 <\/p>\n

\u00a0 \u00a0 kafka\u548cJMS\uff08Java Message Service\uff09\u5b9e\u73b0(activeMQ)\u4e0d\u540c\u7684\u662f:\u5373\u4f7f\u6d88\u606f\u88ab\u6d88\u8d39,\u6d88\u606f\u4ecd\u7136\u4e0d\u4f1a\u88ab\u7acb\u5373\u5220\u9664.\u65e5\u5fd7\u6587\u4ef6\u5c06\u4f1a\u6839\u636ebroker\u4e2d\u7684\u914d\u7f6e\u8981\u6c42,\u4fdd\u7559\u4e00\u5b9a\u7684\u65f6\u95f4\u4e4b\u540e\u5220\u9664;\u6bd4\u5982log\u6587\u4ef6\u4fdd\u75592\u5929,\u90a3\u4e48\u4e24\u5929\u540e,\u6587\u4ef6\u4f1a\u88ab\u6e05\u9664,\u65e0\u8bba\u5176\u4e2d\u7684\u6d88\u606f\u662f\u5426\u88ab\u6d88\u8d39.kafka\u901a\u8fc7\u8fd9\u79cd\u7b80\u5355\u7684\u624b\u6bb5,\u6765\u91ca\u653e\u78c1\u76d8\u7a7a\u95f4,\u4ee5\u53ca\u51cf\u5c11\u6d88\u606f\u6d88\u8d39\u4e4b\u540e\u5bf9\u6587\u4ef6\u5185\u5bb9\u6539\u52a8\u7684\u78c1\u76d8IO\u5f00\u652f.<\/div>\n
<\/div>\n
\u00a0 \u00a0 \u5bf9\u4e8econsumer\u800c\u8a00,\u5b83\u9700\u8981\u4fdd\u5b58\u6d88\u8d39\u6d88\u606f\u7684offset,\u5bf9\u4e8eoffset\u7684\u4fdd\u5b58\u548c\u4f7f\u7528,\u6709consumer\u6765\u63a7\u5236;\u5f53consumer\u6b63\u5e38\u6d88\u8d39\u6d88\u606f\u65f6,offset\u5c06\u4f1a”\u7ebf\u6027”\u7684\u5411\u524d\u9a71\u52a8,\u5373\u6d88\u606f\u5c06\u4f9d\u6b21\u987a\u5e8f\u88ab\u6d88\u8d39.\u4e8b\u5b9e\u4e0aconsumer\u53ef\u4ee5\u4f7f\u7528\u4efb\u610f\u987a\u5e8f\u6d88\u8d39\u6d88\u606f,\u5b83\u53ea\u9700\u8981\u5c06offset\u91cd\u7f6e\u4e3a\u4efb\u610f\u503c..(offset\u5c06\u4f1a\u4fdd\u5b58\u5728zookeeper\u4e2d,\u53c2\u89c1\u4e0b\u6587)<\/div>\n
<\/div>\n
\u00a0 \u00a0 kafka\u96c6\u7fa4\u51e0\u4e4e\u4e0d\u9700\u8981\u7ef4\u62a4\u4efb\u4f55consumer\u548cproducer\u72b6\u6001\u4fe1\u606f,\u8fd9\u4e9b\u4fe1\u606f\u6709zookeeper\u4fdd\u5b58;\u56e0\u6b64producer\u548cconsumer\u7684\u5ba2\u6237\u7aef<\/a>\u5b9e\u73b0\u975e\u5e38\u8f7b\u91cf\u7ea7,\u5b83\u4eec\u53ef\u4ee5\u968f\u610f\u79bb\u5f00,\u800c\u4e0d\u4f1a\u5bf9\u96c6\u7fa4\u9020\u6210\u989d\u5916\u7684\u5f71\u54cd.<\/span><\/div>\n
<\/div>\n
\u00a0 \u00a0 partitions\u7684\u8bbe\u8ba1<\/a>\u76ee\u7684\u6709\u591a\u4e2a.\u6700\u6839\u672c\u539f\u56e0\u662fkafka\u57fa\u4e8e\u6587\u4ef6\u5b58\u50a8.\u901a\u8fc7\u5206\u533a,\u53ef\u4ee5\u5c06\u65e5\u5fd7\u5185\u5bb9\u5206\u6563\u5230\u591a\u4e2aserver<\/a>\u4e0a,\u6765\u907f\u514d\u6587\u4ef6\u5c3a\u5bf8\u8fbe\u5230\u5355\u673a\u78c1\u76d8\u7684\u4e0a\u9650,\u6bcf\u4e2apartiton\u90fd\u4f1a\u88ab\u5f53\u524dserver(kafka\u5b9e\u4f8b)\u4fdd\u5b58;\u53ef\u4ee5\u5c06\u4e00\u4e2atopic\u5207\u5206\u591a\u4efb\u610f\u591a\u4e2apartitions,\u6765\u6d88\u606f\u4fdd\u5b58\/\u6d88\u8d39\u7684\u6548\u7387.\u6b64\u5916\u8d8a\u591a\u7684partitions\u610f\u5473\u7740\u53ef\u4ee5\u5bb9\u7eb3\u66f4\u591a\u7684consumer,\u6709\u6548\u63d0\u5347\u5e76\u53d1\u6d88\u8d39\u7684\u80fd\u529b.(\u5177\u4f53\u539f\u7406\u53c2\u89c1\u4e0b\u6587).<\/span><\/span><\/div>\n
<\/div>\n
\u00a0 \u00a0 3\u3001Distribution<\/div>\n
\u00a0 \u00a0 \u4e00\u4e2aTopic\u7684\u591a\u4e2apartitions,\u88ab\u5206\u5e03\u5728kafka\u96c6\u7fa4\u4e2d\u7684\u591a\u4e2aserver\u4e0a;\u6bcf\u4e2aserver(kafka\u5b9e\u4f8b)\u8d1f\u8d23partitions\u4e2d\u6d88\u606f\u7684\u8bfb\u5199\u64cd\u4f5c;\u6b64\u5916kafka\u8fd8\u53ef\u4ee5\u914d\u7f6epartitions\u9700\u8981\u5907\u4efd\u7684\u4e2a\u6570(replicas),\u6bcf\u4e2apartition\u5c06\u4f1a\u88ab\u5907\u4efd\u5230\u591a\u53f0\u673a\u5668\u4e0a,\u4ee5\u63d0\u9ad8\u53ef\u7528\u6027.<\/div>\n
<\/div>\n
\u00a0 \u00a0 \u57fa\u4e8ereplicated\u65b9\u6848,\u90a3\u4e48\u5c31\u610f\u5473\u7740\u9700\u8981\u5bf9\u591a\u4e2a\u5907\u4efd\u8fdb\u884c\u8c03\u5ea6;\u6bcf\u4e2apartition\u90fd\u6709\u4e00\u4e2aserver<\/a>\u4e3a”leader”;leader\u8d1f\u8d23\u6240\u6709\u7684\u8bfb\u5199\u64cd\u4f5c,\u5982\u679cleader\u5931\u6548,\u90a3\u4e48\u5c06\u4f1a\u6709\u5176\u4ed6follower\u6765\u63a5\u7ba1(\u6210\u4e3a\u65b0\u7684leader);follower\u53ea\u662f\u5355\u8c03\u7684\u548cleader\u8ddf\u8fdb,\u540c\u6b65\u6d88\u606f\u5373\u53ef..\u7531\u6b64\u53ef\u89c1\u4f5c\u4e3aleader\u7684server\u627f\u8f7d\u4e86\u5168\u90e8\u7684\u8bf7\u6c42\u538b\u529b,\u56e0\u6b64\u4ece\u96c6\u7fa4\u7684\u6574\u4f53\u8003\u8651,\u6709\u591a\u5c11\u4e2apartitions\u5c31\u610f\u5473\u7740\u6709\u591a\u5c11\u4e2a”leader”,kafka\u4f1a\u5c06”leader”\u5747\u8861\u7684\u5206\u6563\u5728\u6bcf\u4e2a\u5b9e\u4f8b\u4e0a,\u6765\u786e\u4fdd\u6574\u4f53\u7684\u6027\u80fd\u7a33\u5b9a.<\/span><\/div>\n
<\/div>\n
\u00a0 \u00a0\u00a0Producers<\/div>\n
\u00a0 \u00a0 Producer\u5c06\u6d88\u606f\u53d1\u5e03\u5230\u6307\u5b9a\u7684Topic\u4e2d,\u540c\u65f6Producer\u4e5f\u80fd\u51b3\u5b9a\u5c06\u6b64\u6d88\u606f\u5f52\u5c5e\u4e8e\u54ea\u4e2apartition;\u6bd4\u5982\u57fa\u4e8e”round-robin”\u65b9\u5f0f\u6216\u8005\u901a\u8fc7\u5176\u4ed6\u7684\u4e00\u4e9b\u7b97\u6cd5\u7b49.<\/div>\n
<\/div>\n
\u00a0 \u00a0\u00a0Consumers<\/div>\n
\u00a0 \u00a0 \u672c\u8d28\u4e0akafka\u53ea\u652f\u6301Topic.\u6bcf\u4e2aconsumer\u5c5e\u4e8e\u4e00\u4e2aconsumer group;\u53cd\u8fc7\u6765\u8bf4,\u6bcf\u4e2agroup\u4e2d\u53ef\u4ee5\u6709\u591a\u4e2aconsumer.\u53d1\u9001\u5230Topic\u7684\u6d88\u606f,\u53ea\u4f1a\u88ab\u8ba2\u9605\u6b64Topic\u7684\u6bcf\u4e2agroup\u4e2d\u7684\u4e00\u4e2aconsumer\u6d88\u8d39.<\/div>\n
<\/div>\n
\u00a0 \u00a0 \u5982\u679c\u6240\u6709\u7684consumer\u90fd\u5177\u6709\u76f8\u540c\u7684group,\u8fd9\u79cd\u60c5\u51b5\u548cqueue\u6a21\u5f0f\u5f88\u50cf;\u6d88\u606f\u5c06\u4f1a\u5728consumers\u4e4b\u95f4\u8d1f\u8f7d\u5747\u8861.<\/div>\n
\u00a0 \u00a0 \u5982\u679c\u6240\u6709\u7684consumer\u90fd\u5177\u6709\u4e0d\u540c\u7684group,\u90a3\u8fd9\u5c31\u662f”\u53d1\u5e03-\u8ba2\u9605”;\u6d88\u606f\u5c06\u4f1a\u5e7f\u64ad\u7ed9\u6240\u6709\u7684\u6d88\u8d39\u8005.<\/div>\n
\u00a0 \u00a0 \u5728kafka\u4e2d,\u4e00\u4e2apartition\u4e2d\u7684\u6d88\u606f\u53ea\u4f1a\u88abgroup\u4e2d\u7684\u4e00\u4e2aconsumer\u6d88\u8d39;\u6bcf\u4e2agroup\u4e2dconsumer\u6d88\u606f\u6d88\u8d39\u4e92\u76f8\u72ec\u7acb;\u6211\u4eec\u53ef\u4ee5\u8ba4\u4e3a\u4e00\u4e2agroup\u662f\u4e00\u4e2a”\u8ba2\u9605”\u8005,\u4e00\u4e2aTopic\u4e2d\u7684\u6bcf\u4e2apartions,\u53ea\u4f1a\u88ab\u4e00\u4e2a”\u8ba2\u9605\u8005”\u4e2d\u7684\u4e00\u4e2aconsumer\u6d88\u8d39,\u4e0d\u8fc7\u4e00\u4e2aconsumer\u53ef\u4ee5\u6d88\u8d39\u591a\u4e2apartitions\u4e2d\u7684\u6d88\u606f.kafka\u53ea\u80fd\u4fdd\u8bc1\u4e00\u4e2apartition\u4e2d\u7684\u6d88\u606f\u88ab\u67d0\u4e2aconsumer\u6d88\u8d39\u65f6,\u6d88\u606f\u662f\u987a\u5e8f\u7684.\u4e8b\u5b9e\u4e0a,\u4eceTopic\u89d2\u5ea6\u6765\u8bf4,\u6d88\u606f\u4ecd\u4e0d\u662f\u6709\u5e8f\u7684.<\/div>\n
<\/div>\n
\u00a0 \u00a0 kafka\u7684\u8bbe\u8ba1<\/a>\u539f\u7406\u51b3\u5b9a,\u5bf9\u4e8e\u4e00\u4e2atopic,\u540c\u4e00\u4e2agroup\u4e2d\u4e0d\u80fd\u6709\u591a\u4e8epartitions\u4e2a\u6570\u7684consumer\u540c\u65f6\u6d88\u8d39,\u5426\u5219\u5c06\u610f\u5473\u7740\u67d0\u4e9bconsumer\u5c06\u65e0\u6cd5\u5f97\u5230\u6d88\u606f.<\/span><\/div>\n
<\/div>\n
\u00a0 \u00a0\u00a0Guarantees<\/div>\n
\u00a0 \u00a0 1) \u53d1\u9001\u5230partitions\u4e2d\u7684\u6d88\u606f\u5c06\u4f1a\u6309\u7167\u5b83\u63a5\u6536\u7684\u987a\u5e8f\u8ffd\u52a0\u5230\u65e5\u5fd7\u4e2d<\/div>\n
\u00a0 \u00a0 2) \u5bf9\u4e8e\u6d88\u8d39\u8005\u800c\u8a00,\u5b83\u4eec\u6d88\u8d39\u6d88\u606f\u7684\u987a\u5e8f\u548c\u65e5\u5fd7\u4e2d\u6d88\u606f\u987a\u5e8f\u4e00\u81f4.<\/div>\n
\u00a0 \u00a0 3) \u5982\u679cTopic\u7684”replicationfactor”\u4e3aN,\u90a3\u4e48\u5141\u8bb8N-1\u4e2akafka\u5b9e\u4f8b\u5931\u6548.<\/div>\n
<\/div>\n
\u4e8c\u3001\u4f7f\u7528\u573a\u666f<\/div>\n
<\/div>\n
\u00a0 \u00a0 1\u3001Messaging<\/div>\n
\u00a0 \u00a0 \u5bf9\u4e8e\u4e00\u4e9b\u5e38\u89c4\u7684\u6d88\u606f\u7cfb\u7edf,kafka\u662f\u4e2a\u4e0d\u9519\u7684\u9009\u62e9;partitons\/replication\u548c\u5bb9\u9519,\u53ef\u4ee5\u4f7fkafka\u5177\u6709\u826f\u597d\u7684\u6269\u5c55\u6027\u548c\u6027\u80fd\u4f18\u52bf.\u4e0d\u8fc7\u5230\u76ee\u524d\u4e3a\u6b62,\u6211\u4eec\u5e94\u8be5\u5f88\u6e05\u695a\u8ba4\u8bc6\u5230,kafka\u5e76\u6ca1\u6709\u63d0\u4f9bJMS\u4e2d\u7684”\u4e8b\u52a1\u6027””\u6d88\u606f\u4f20\u8f93\u62c5\u4fdd(\u6d88\u606f\u786e\u8ba4\u673a\u5236)””\u6d88\u606f\u5206\u7ec4”\u7b49\u4f01\u4e1a\u7ea7\u7279\u6027;kafka\u53ea\u80fd\u4f7f\u7528\u4f5c\u4e3a”\u5e38\u89c4”\u7684\u6d88\u606f\u7cfb\u7edf,\u5728\u4e00\u5b9a\u7a0b\u5ea6\u4e0a,\u5c1a\u672a\u786e\u4fdd\u6d88\u606f\u7684\u53d1\u9001\u4e0e\u63a5\u6536\u7edd\u5bf9\u53ef\u9760(\u6bd4\u5982,\u6d88\u606f\u91cd\u53d1,\u6d88\u606f\u53d1\u9001\u4e22\u5931\u7b49)<\/div>\n
<\/div>\n
\u00a0 \u00a0 2\u3001Websit activity tracking<\/div>\n
\u00a0 \u00a0 kafka\u53ef\u4ee5\u4f5c\u4e3a”\u7f51\u7ad9\u6d3b\u6027\u8ddf\u8e2a”\u7684\u6700\u4f73\u5de5\u5177;\u53ef\u4ee5\u5c06\u7f51\u9875\/\u7528\u6237\u64cd\u4f5c\u7b49\u4fe1\u606f\u53d1\u9001\u5230kafka\u4e2d.\u5e76\u5b9e\u65f6\u76d1\u63a7,\u6216\u8005\u79bb\u7ebf\u7edf\u8ba1\u5206\u6790\u7b49<\/div>\n

 <\/p>\n

\u00a0 \u00a0 3\u3001Log Aggregation<\/div>\n
\u00a0 \u00a0 kafka\u7684\u7279\u6027\u51b3\u5b9a\u5b83\u975e\u5e38\u9002\u5408\u4f5c\u4e3a”\u65e5\u5fd7\u6536\u96c6\u4e2d\u5fc3”;application\u53ef\u4ee5\u5c06\u64cd\u4f5c\u65e5\u5fd7”\u6279\u91cf””\u5f02\u6b65”\u7684\u53d1\u9001\u5230kafka\u96c6\u7fa4\u4e2d,\u800c\u4e0d\u662f\u4fdd\u5b58\u5728\u672c\u5730\u6216\u8005DB\u4e2d;kafka\u53ef\u4ee5\u6279\u91cf\u63d0\u4ea4\u6d88\u606f\/\u538b\u7f29\u6d88\u606f\u7b49,\u8fd9\u5bf9producer\u7aef\u800c\u8a00,\u51e0\u4e4e\u611f\u89c9\u4e0d\u5230\u6027\u80fd\u7684\u5f00\u652f.\u6b64\u65f6consumer\u7aef\u53ef\u4ee5\u4f7fhadoop\u7b49\u5176\u4ed6\u7cfb\u7edf\u5316\u7684\u5b58\u50a8\u548c\u5206\u6790\u7cfb\u7edf.<\/div>\n
<\/div>\n
\u4e09\u3001\u8bbe\u8ba1\u539f\u7406<\/div>\n
<\/div>\n
\u00a0 \u00a0 kafka\u7684\u8bbe\u8ba1<\/a>\u521d\u8877\u662f\u5e0c\u671b\u4f5c\u4e3a\u4e00\u4e2a\u7edf\u4e00\u7684\u4fe1\u606f\u6536\u96c6\u5e73\u53f0,\u80fd\u591f\u5b9e\u65f6\u7684\u6536\u96c6\u53cd\u9988\u4fe1\u606f,\u5e76\u9700\u8981\u80fd\u591f\u652f\u6491\u8f83\u5927\u7684\u6570\u636e\u91cf,\u4e14\u5177\u5907\u826f\u597d\u7684\u5bb9\u9519\u80fd\u529b.<\/span><\/div>\n
<\/div>\n
\u00a0 \u00a0 1\u3001\u6301\u4e45\u6027<\/div>\n
\u00a0 \u00a0 kafka\u4f7f\u7528\u6587\u4ef6\u5b58\u50a8\u6d88\u606f,\u8fd9\u5c31\u76f4\u63a5\u51b3\u5b9akafka\u5728\u6027\u80fd\u4e0a\u4e25\u91cd\u4f9d\u8d56\u6587\u4ef6\u7cfb\u7edf\u7684\u672c\u8eab\u7279\u6027.\u4e14\u65e0\u8bba\u4efb\u4f55OS\u4e0b,\u5bf9\u6587\u4ef6\u7cfb\u7edf\u672c\u8eab\u7684\u4f18\u5316\u51e0\u4e4e\u6ca1\u6709\u53ef\u80fd.\u6587\u4ef6\u7f13\u5b58\/\u76f4\u63a5\u5185\u5b58\u6620\u5c04\u7b49\u662f\u5e38\u7528\u7684\u624b\u6bb5.\u56e0\u4e3akafka\u662f\u5bf9\u65e5\u5fd7\u6587\u4ef6\u8fdb\u884cappend\u64cd\u4f5c,\u56e0\u6b64\u78c1\u76d8\u68c0\u7d22\u7684\u5f00\u652f\u662f\u8f83\u5c0f\u7684;\u540c\u65f6\u4e3a\u4e86\u51cf\u5c11\u78c1\u76d8\u5199\u5165\u7684\u6b21\u6570,broker\u4f1a\u5c06\u6d88\u606f\u6682\u65f6buffer\u8d77\u6765,\u5f53\u6d88\u606f\u7684\u4e2a\u6570(\u6216\u5c3a\u5bf8)\u8fbe\u5230\u4e00\u5b9a\u9600\u503c\u65f6,\u518dflush\u5230\u78c1\u76d8,\u8fd9\u6837\u51cf\u5c11\u4e86\u78c1\u76d8IO\u8c03\u7528\u7684\u6b21\u6570.<\/div>\n
\n2\u3001\u6027\u80fd<\/div>\n
\u00a0 \u00a0 \u9700\u8981\u8003\u8651\u7684\u5f71\u54cd\u6027\u80fd\u70b9\u5f88\u591a,\u9664\u78c1\u76d8IO\u4e4b\u5916,\u6211\u4eec\u8fd8\u9700\u8981\u8003\u8651\u7f51\u7edcIO,\u8fd9\u76f4\u63a5\u5173\u7cfb\u5230kafka\u7684\u541e\u5410\u91cf\u95ee\u9898.kafka\u5e76\u6ca1\u6709\u63d0\u4f9b\u592a\u591a\u9ad8\u8d85\u7684\u6280\u5de7;\u5bf9\u4e8eproducer\u7aef,\u53ef\u4ee5\u5c06\u6d88\u606fbuffer\u8d77\u6765,\u5f53\u6d88\u606f\u7684\u6761\u6570\u8fbe\u5230\u4e00\u5b9a\u9600\u503c\u65f6,\u6279\u91cf\u53d1\u9001\u7ed9broker;\u5bf9\u4e8econsumer\u7aef\u4e5f\u662f\u4e00\u6837,\u6279\u91cffetch\u591a\u6761\u6d88\u606f.\u4e0d\u8fc7\u6d88\u606f\u91cf\u7684\u5927\u5c0f\u53ef\u4ee5\u901a\u8fc7\u914d\u7f6e\u6587\u4ef6\u6765\u6307\u5b9a.\u5bf9\u4e8ekafka broker\u7aef,\u4f3c\u4e4e\u6709\u4e2asendfile\u7cfb\u7edf\u8c03\u7528\u53ef\u4ee5\u6f5c\u5728\u7684\u63d0\u5347\u7f51\u7edcIO\u7684\u6027\u80fd:\u5c06\u6587\u4ef6\u7684\u6570\u636e\u6620\u5c04\u5230\u7cfb\u7edf\u5185\u5b58\u4e2d,socket\u76f4\u63a5\u8bfb\u53d6\u76f8\u5e94\u7684\u5185\u5b58\u533a\u57df\u5373\u53ef,\u800c\u65e0\u9700\u8fdb\u7a0b\u518d\u6b21copy\u548c\u4ea4\u6362. \u5176\u5b9e\u5bf9\u4e8eproducer\/consumer\/broker\u4e09\u8005\u800c\u8a00,CPU\u7684\u5f00\u652f\u5e94\u8be5\u90fd\u4e0d\u5927,\u56e0\u6b64\u542f\u7528\u6d88\u606f\u538b\u7f29\u673a\u5236\u662f\u4e00\u4e2a\u826f\u597d\u7684\u7b56\u7565;\u538b\u7f29\u9700\u8981\u6d88\u8017\u5c11\u91cf\u7684CPU\u8d44\u6e90,\u4e0d\u8fc7\u5bf9\u4e8ekafka\u800c\u8a00,\u7f51\u7edcIO\u66f4\u5e94\u8be5\u9700\u8981\u8003\u8651.\u53ef\u4ee5\u5c06\u4efb\u4f55\u5728\u7f51\u7edc\u4e0a\u4f20\u8f93\u7684\u6d88\u606f\u90fd\u7ecf\u8fc7\u538b\u7f29.kafka\u652f\u6301gzip\/snappy\u7b49\u591a\u79cd\u538b\u7f29\u65b9\u5f0f.<\/div>\n
<\/div>\n
\u00a0 \u00a0 3\u3001\u751f\u4ea7\u8005<\/div>\n
\u00a0 \u00a0 \u8d1f\u8f7d\u5747\u8861: producer\u5c06\u4f1a\u548cTopic\u4e0b\u6240\u6709partition leader\u4fdd\u6301socket\u8fde\u63a5;\u6d88\u606f\u7531producer\u76f4\u63a5\u901a\u8fc7socket\u53d1\u9001\u5230broker,\u4e2d\u95f4\u4e0d\u4f1a\u7ecf\u8fc7\u4efb\u4f55”\u8def\u7531\u5c42”.\u4e8b\u5b9e\u4e0a,\u6d88\u606f\u88ab\u8def\u7531\u5230\u54ea\u4e2apartition\u4e0a,\u6709producer\u5ba2\u6237\u7aef<\/a>\u51b3\u5b9a.\u6bd4\u5982\u53ef\u4ee5\u91c7\u7528”random””key-hash””\u8f6e\u8be2”\u7b49,\u5982\u679c\u4e00\u4e2atopic\u4e2d\u6709\u591a\u4e2apartitions,\u90a3\u4e48\u5728producer\u7aef\u5b9e\u73b0”\u6d88\u606f\u5747\u8861\u5206\u53d1”\u662f\u5fc5\u8981\u7684.<\/span><\/div>\n
<\/div>\n
\u00a0 \u00a0 \u5176\u4e2dpartition leader\u7684\u4f4d\u7f6e(host:port)\u6ce8\u518c\u5728zookeeper\u4e2d,producer\u4f5c\u4e3azookeeper client,\u5df2\u7ecf\u6ce8\u518c\u4e86watch\u7528\u6765\u76d1\u542cpartition leader\u7684\u53d8\u66f4\u4e8b\u4ef6.<\/div>\n
\u00a0 \u00a0 \u5f02\u6b65\u53d1\u9001\uff1a\u5c06\u591a\u6761\u6d88\u606f\u6682\u4e14\u5728\u5ba2\u6237\u7aefbuffer\u8d77\u6765\uff0c\u5e76\u5c06\u4ed6\u4eec\u6279\u91cf\u7684\u53d1\u9001\u5230broker\uff0c\u5c0f\u6570\u636eIO\u592a\u591a\uff0c\u4f1a\u62d6\u6162\u6574\u4f53\u7684\u7f51\u7edc\u5ef6\u8fdf\uff0c\u6279\u91cf\u5ef6\u8fdf\u53d1\u9001\u4e8b\u5b9e\u4e0a\u63d0\u5347\u4e86\u7f51\u7edc\u6548\u7387\u3002\u4e0d\u8fc7\u8fd9\u4e5f\u6709\u4e00\u5b9a\u7684\u9690\u60a3\uff0c\u6bd4\u5982\u8bf4\u5f53producer\u5931\u6548\u65f6\uff0c\u90a3\u4e9b\u5c1a\u672a\u53d1\u9001\u7684\u6d88\u606f\u5c06\u4f1a\u4e22\u5931\u3002<\/div>\n

 <\/p>\n

\u00a0 \u00a0 4\u3001\u6d88\u8d39\u8005<\/div>\n
\u00a0 \u00a0 consumer\u7aef\u5411broker\u53d1\u9001”fetch”\u8bf7\u6c42,\u5e76\u544a\u77e5\u5176\u83b7\u53d6\u6d88\u606f\u7684offset;\u6b64\u540econsumer\u5c06\u4f1a\u83b7\u5f97\u4e00\u5b9a\u6761\u6570\u7684\u6d88\u606f;consumer\u7aef\u4e5f\u53ef\u4ee5\u91cd\u7f6eoffset\u6765\u91cd\u65b0\u6d88\u8d39\u6d88\u606f.<\/div>\n
<\/div>\n
\u00a0 \u00a0 \u5728JMS\u5b9e\u73b0\u4e2d,Topic\u6a21\u578b\u57fa\u4e8epush\u65b9\u5f0f,\u5373broker\u5c06\u6d88\u606f\u63a8\u9001\u7ed9consumer\u7aef.\u4e0d\u8fc7\u5728kafka\u4e2d,\u91c7\u7528\u4e86pull\u65b9\u5f0f,\u5373consumer\u5728\u548cbroker\u5efa\u7acb\u8fde\u63a5\u4e4b\u540e,\u4e3b\u52a8\u53bbpull(\u6216\u8005\u8bf4fetch)\u6d88\u606f;\u8fd9\u4e2d\u6a21\u5f0f\u6709\u4e9b\u4f18\u70b9,\u9996\u5148consumer\u7aef\u53ef\u4ee5\u6839\u636e\u81ea\u5df1\u7684\u6d88\u8d39\u80fd\u529b\u9002\u65f6\u7684\u53bbfetch\u6d88\u606f\u5e76\u5904\u7406,\u4e14\u53ef\u4ee5\u63a7\u5236\u6d88\u606f\u6d88\u8d39\u7684\u8fdb\u5ea6(offset);\u6b64\u5916,\u6d88\u8d39\u8005\u53ef\u4ee5\u826f\u597d\u7684\u63a7\u5236\u6d88\u606f\u6d88\u8d39\u7684\u6570\u91cf,batch fetch.<\/div>\n
<\/div>\n
\u00a0 \u00a0 \u5176\u4ed6JMS\u5b9e\u73b0,\u6d88\u606f\u6d88\u8d39\u7684\u4f4d\u7f6e\u662f\u6709prodiver\u4fdd\u7559,\u4ee5\u4fbf\u907f\u514d\u91cd\u590d\u53d1\u9001\u6d88\u606f\u6216\u8005\u5c06\u6ca1\u6709\u6d88\u8d39\u6210\u529f\u7684\u6d88\u606f\u91cd\u53d1\u7b49,\u540c\u65f6\u8fd8\u8981\u63a7\u5236\u6d88\u606f\u7684\u72b6\u6001.\u8fd9\u5c31\u8981\u6c42JMS broker\u9700\u8981\u592a\u591a\u989d\u5916\u7684\u5de5\u4f5c.\u5728kafka\u4e2d,partition\u4e2d\u7684\u6d88\u606f\u53ea\u6709\u4e00\u4e2aconsumer\u5728\u6d88\u8d39,\u4e14\u4e0d\u5b58\u5728\u6d88\u606f\u72b6\u6001\u7684\u63a7\u5236,\u4e5f\u6ca1\u6709\u590d\u6742\u7684\u6d88\u606f\u786e\u8ba4\u673a\u5236,\u53ef\u89c1kafka broker\u7aef\u662f\u76f8\u5f53\u8f7b\u91cf\u7ea7\u7684.\u5f53\u6d88\u606f\u88abconsumer\u63a5\u6536\u4e4b\u540e,consumer\u53ef\u4ee5\u5728\u672c\u5730\u4fdd\u5b58\u6700\u540e\u6d88\u606f\u7684offset,\u5e76\u95f4\u6b47\u6027\u7684\u5411zookeeper\u6ce8\u518coffset.\u7531\u6b64\u53ef\u89c1,consumer\u5ba2\u6237\u7aef<\/a>\u4e5f\u5f88\u8f7b\u91cf\u7ea7.<\/span><\/div>\n
<\/div>\n
<ignore_js_op>\"\"<\/div>\n

 <\/p>\n

\u00a0 \u00a0 5\u3001\u6d88\u606f\u4f20\u9001\u673a\u5236<\/div>\n
\u00a0 \u00a0 \u5bf9\u4e8eJMS\u5b9e\u73b0,\u6d88\u606f\u4f20\u8f93\u62c5\u4fdd\u975e\u5e38\u76f4\u63a5:\u6709\u4e14\u53ea\u6709\u4e00\u6b21(exactly once).\u5728kafka\u4e2d\u7a0d\u6709\u4e0d\u540c:<\/div>\n
\u00a0 \u00a0 1) at most once: \u6700\u591a\u4e00\u6b21,\u8fd9\u4e2a\u548cJMS\u4e2d”\u975e\u6301\u4e45\u5316”\u6d88\u606f\u7c7b\u4f3c.\u53d1\u9001\u4e00\u6b21,\u65e0\u8bba\u6210\u8d25,\u5c06\u4e0d\u4f1a\u91cd\u53d1.<\/div>\n
\u00a0 \u00a0 2) at least once: \u6d88\u606f\u81f3\u5c11\u53d1\u9001\u4e00\u6b21,\u5982\u679c\u6d88\u606f\u672a\u80fd\u63a5\u53d7\u6210\u529f,\u53ef\u80fd\u4f1a\u91cd\u53d1,\u76f4\u5230\u63a5\u6536\u6210\u529f.<\/div>\n
\u00a0 \u00a0 3) exactly once: \u6d88\u606f\u53ea\u4f1a\u53d1\u9001\u4e00\u6b21.<\/div>\n
\u00a0 \u00a0 at most once: \u6d88\u8d39\u8005fetch\u6d88\u606f,\u7136\u540e\u4fdd\u5b58offset,\u7136\u540e\u5904\u7406\u6d88\u606f;\u5f53client\u4fdd\u5b58offset\u4e4b\u540e,\u4f46\u662f\u5728\u6d88\u606f\u5904\u7406\u8fc7\u7a0b\u4e2d\u51fa\u73b0\u4e86\u5f02\u5e38,\u5bfc\u81f4\u90e8\u5206\u6d88\u606f\u672a\u80fd\u7ee7\u7eed\u5904\u7406.\u90a3\u4e48\u6b64\u540e”\u672a\u5904\u7406”\u7684\u6d88\u606f\u5c06\u4e0d\u80fd\u88abfetch\u5230,\u8fd9\u5c31\u662f”at most once”.<\/div>\n
\u00a0 \u00a0 at least once: \u6d88\u8d39\u8005fetch\u6d88\u606f,\u7136\u540e\u5904\u7406\u6d88\u606f,\u7136\u540e\u4fdd\u5b58offset.\u5982\u679c\u6d88\u606f\u5904\u7406\u6210\u529f\u4e4b\u540e,\u4f46\u662f\u5728\u4fdd\u5b58offset\u9636\u6bb5zookeeper\u5f02\u5e38\u5bfc\u81f4\u4fdd\u5b58\u64cd\u4f5c\u672a\u80fd\u6267\u884c\u6210\u529f,\u8fd9\u5c31\u5bfc\u81f4\u63a5\u4e0b\u6765\u518d\u6b21fetch\u65f6\u53ef\u80fd\u83b7\u5f97\u4e0a\u6b21\u5df2\u7ecf\u5904\u7406\u8fc7\u7684\u6d88\u606f,\u8fd9\u5c31\u662f”at least once”\uff0c\u539f\u56e0offset\u6ca1\u6709\u53ca\u65f6\u7684\u63d0\u4ea4\u7ed9zookeeper\uff0czookeeper\u6062\u590d\u6b63\u5e38\u8fd8\u662f\u4e4b\u524doffset\u72b6\u6001.<\/div>\n
\u00a0 \u00a0 exactly once: kafka\u4e2d\u5e76\u6ca1\u6709\u4e25\u683c\u7684\u53bb\u5b9e\u73b0(\u57fa\u4e8e2\u9636\u6bb5\u63d0\u4ea4,\u4e8b\u52a1),\u6211\u4eec\u8ba4\u4e3a\u8fd9\u79cd\u7b56\u7565\u5728kafka\u4e2d\u662f\u6ca1\u6709\u5fc5\u8981\u7684.<\/div>\n
\u00a0 \u00a0 \u901a\u5e38\u60c5\u51b5\u4e0b”at-least-once”\u662f\u6211\u4eec\u641c\u9009.(\u76f8\u6bd4at most once\u800c\u8a00,\u91cd\u590d\u63a5\u6536\u6570\u636e\u603b\u6bd4\u4e22\u5931\u6570\u636e\u8981\u597d).<\/div>\n
<\/div>\n
\u00a0 \u00a0 6\u3001\u590d\u5236\u5907\u4efd<\/div>\n
\u00a0 \u00a0 kafka\u5c06\u6bcf\u4e2apartition\u6570\u636e\u590d\u5236\u5230\u591a\u4e2aserver\u4e0a,\u4efb\u4f55\u4e00\u4e2apartition\u6709\u4e00\u4e2aleader\u548c\u591a\u4e2afollower(\u53ef\u4ee5\u6ca1\u6709);\u5907\u4efd\u7684\u4e2a\u6570\u53ef\u4ee5\u901a\u8fc7broker\u914d\u7f6e\u6587\u4ef6\u6765\u8bbe\u5b9a.leader\u5904\u7406\u6240\u6709\u7684read-write\u8bf7\u6c42,follower\u9700\u8981\u548cleader\u4fdd\u6301\u540c\u6b65.Follower\u548cconsumer\u4e00\u6837,\u6d88\u8d39\u6d88\u606f\u5e76\u4fdd\u5b58\u5728\u672c\u5730\u65e5\u5fd7\u4e2d;leader\u8d1f\u8d23\u8ddf\u8e2a\u6240\u6709\u7684follower\u72b6\u6001,\u5982\u679cfollower”\u843d\u540e”\u592a\u591a\u6216\u8005\u5931\u6548,leader\u5c06\u4f1a\u628a\u5b83\u4ecereplicas\u540c\u6b65\u5217\u8868\u4e2d\u5220\u9664.\u5f53\u6240\u6709\u7684follower\u90fd\u5c06\u4e00\u6761\u6d88\u606f\u4fdd\u5b58\u6210\u529f,\u6b64\u6d88\u606f\u624d\u88ab\u8ba4\u4e3a\u662f”committed”,\u90a3\u4e48\u6b64\u65f6consumer\u624d\u80fd\u6d88\u8d39\u5b83.\u5373\u4f7f\u53ea\u6709\u4e00\u4e2areplicas\u5b9e\u4f8b\u5b58\u6d3b,\u4ecd\u7136\u53ef\u4ee5\u4fdd\u8bc1\u6d88\u606f\u7684\u6b63\u5e38\u53d1\u9001\u548c\u63a5\u6536,\u53ea\u8981zookeeper\u96c6\u7fa4\u5b58\u6d3b\u5373\u53ef.(\u4e0d\u540c\u4e8e\u5176\u4ed6\u5206\u5e03\u5f0f\u5b58\u50a8,\u6bd4\u5982hbase\u9700\u8981”\u591a\u6570\u6d3e”\u5b58\u6d3b\u624d\u884c)<\/div>\n
\u00a0 \u00a0 \u5f53leader\u5931\u6548\u65f6,\u9700\u5728followers\u4e2d\u9009\u53d6\u51fa\u65b0\u7684leader,\u53ef\u80fd\u6b64\u65f6follower\u843d\u540e\u4e8eleader,\u56e0\u6b64\u9700\u8981\u9009\u62e9\u4e00\u4e2a”up-to-date”\u7684follower.\u9009\u62e9follower\u65f6\u9700\u8981\u517c\u987e\u4e00\u4e2a\u95ee\u9898,\u5c31\u662f\u65b0leaderserver<\/a>\u4e0a\u6240\u5df2\u7ecf\u627f\u8f7d\u7684partition leader\u7684\u4e2a\u6570,\u5982\u679c\u4e00\u4e2aserver\u4e0a\u6709\u8fc7\u591a\u7684partition leader,\u610f\u5473\u7740\u6b64server\u5c06\u627f\u53d7\u7740\u66f4\u591a\u7684IO\u538b\u529b.\u5728\u9009\u4e3e\u65b0leader,\u9700\u8981\u8003\u8651\u5230”\u8d1f\u8f7d\u5747\u8861”.<\/span><\/div>\n
<\/div>\n
\u00a0 \u00a0 7.\u65e5\u5fd7<\/div>\n
\u00a0 \u00a0 \u5982\u679c\u4e00\u4e2atopic\u7684\u540d\u79f0\u4e3a”my_topic”,\u5b83\u67092\u4e2apartitions,\u90a3\u4e48\u65e5\u5fd7\u5c06\u4f1a\u4fdd\u5b58\u5728my_topic_0\u548cmy_topic_1\u4e24\u4e2a\u76ee\u5f55\u4e2d;\u65e5\u5fd7\u6587\u4ef6\u4e2d\u4fdd\u5b58\u4e86\u4e00\u5e8f\u5217”log entries”(\u65e5\u5fd7\u6761\u76ee),\u6bcf\u4e2alog entry\u683c\u5f0f\u4e3a”4\u4e2a\u5b57\u8282\u7684\u6570\u5b57N\u8868\u793a\u6d88\u606f\u7684\u957f\u5ea6” + “N\u4e2a\u5b57\u8282\u7684\u6d88\u606f\u5185\u5bb9”;\u6bcf\u4e2a\u65e5\u5fd7\u90fd\u6709\u4e00\u4e2aoffset\u6765\u552f\u4e00\u7684\u6807\u8bb0\u4e00\u6761\u6d88\u606f,offset\u7684\u503c\u4e3a8\u4e2a\u5b57\u8282\u7684\u6570\u5b57,\u8868\u793a\u6b64\u6d88\u606f\u5728\u6b64partition\u4e2d\u6240\u5904\u7684\u8d77\u59cb\u4f4d\u7f6e..\u6bcf\u4e2apartition\u5728\u7269\u7406\u5b58\u50a8\u5c42\u9762,\u6709\u591a\u4e2alog file\u7ec4\u6210(\u79f0\u4e3asegment).segmentfile\u7684\u547d\u540d\u4e3a”\u6700\u5c0foffset”.kafka.\u4f8b\u5982”00000000000.kafka”;\u5176\u4e2d”\u6700\u5c0foffset”\u8868\u793a\u6b64segment\u4e2d\u8d77\u59cb\u6d88\u606f\u7684offset.<\/div>\n
<ignore_js_op>\"\"<\/div>\n
\u00a0 \u00a0 \u5176\u4e2d\u6bcf\u4e2apartiton\u4e2d\u6240\u6301\u6709\u7684segments\u5217\u8868\u4fe1\u606f\u4f1a\u5b58\u50a8\u5728zookeeper\u4e2d.<\/div>\n
\u00a0 \u00a0 \u5f53segment\u6587\u4ef6\u5c3a\u5bf8\u8fbe\u5230\u4e00\u5b9a\u9600\u503c\u65f6(\u53ef\u4ee5\u901a\u8fc7\u914d\u7f6e\u6587\u4ef6\u8bbe\u5b9a,\u9ed8\u8ba41G),\u5c06\u4f1a\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u6587\u4ef6;\u5f53buffer\u4e2d\u6d88\u606f\u7684\u6761\u6570\u8fbe\u5230\u9600\u503c\u65f6\u5c06\u4f1a\u89e6\u53d1\u65e5\u5fd7\u4fe1\u606fflush\u5230\u65e5\u5fd7\u6587\u4ef6\u4e2d,\u540c\u65f6\u5982\u679c”\u8ddd\u79bb\u6700\u8fd1\u4e00\u6b21flush\u7684\u65f6\u95f4\u5dee”\u8fbe\u5230\u9600\u503c\u65f6,\u4e5f\u4f1a\u89e6\u53d1flush\u5230\u65e5\u5fd7\u6587\u4ef6.\u5982\u679cbroker\u5931\u6548,\u6781\u6709\u53ef\u80fd\u4f1a\u4e22\u5931\u90a3\u4e9b\u5c1a\u672aflush\u5230\u6587\u4ef6\u7684\u6d88\u606f.\u56e0\u4e3aserver<\/a>\u610f\u5916\u5b9e\u73b0,\u4ecd\u7136\u4f1a\u5bfc\u81f4log\u6587\u4ef6\u683c\u5f0f\u7684\u7834\u574f(\u6587\u4ef6\u5c3e\u90e8),\u90a3\u4e48\u5c31\u8981\u6c42\u5f53server\u542f\u4e1c\u662f\u9700\u8981\u68c0\u6d4b\u6700\u540e\u4e00\u4e2asegment\u7684\u6587\u4ef6\u7ed3\u6784\u662f\u5426\u5408\u6cd5\u5e76\u8fdb\u884c\u5fc5\u8981\u7684\u4fee\u590d.<\/span><\/div>\n
\u00a0 \u00a0 \u83b7\u53d6\u6d88\u606f\u65f6,\u9700\u8981\u6307\u5b9aoffset\u548c\u6700\u5927chunk\u5c3a\u5bf8,offset\u7528\u6765\u8868\u793a\u6d88\u606f\u7684\u8d77\u59cb\u4f4d\u7f6e,chunk size\u7528\u6765\u8868\u793a\u6700\u5927\u83b7\u53d6\u6d88\u606f\u7684\u603b\u957f\u5ea6(\u95f4\u63a5\u7684\u8868\u793a\u6d88\u606f\u7684\u6761\u6570).\u6839\u636eoffset,\u53ef\u4ee5\u627e\u5230\u6b64\u6d88\u606f\u6240\u5728segment\u6587\u4ef6,\u7136\u540e\u6839\u636esegment\u7684\u6700\u5c0foffset\u53d6\u5dee\u503c,\u5f97\u5230\u5b83\u5728file\u4e2d\u7684\u76f8\u5bf9\u4f4d\u7f6e,\u76f4\u63a5\u8bfb\u53d6\u8f93\u51fa\u5373\u53ef.<\/div>\n
\u00a0 \u00a0 \u65e5\u5fd7\u6587\u4ef6\u7684\u5220\u9664\u7b56\u7565\u975e\u5e38\u7b80\u5355:\u542f\u52a8\u4e00\u4e2a\u540e\u53f0\u7ebf\u7a0b\u5b9a\u671f\u626b\u63cflog file\u5217\u8868,\u628a\u4fdd\u5b58\u65f6\u95f4\u8d85\u8fc7\u9600\u503c\u7684\u6587\u4ef6\u76f4\u63a5\u5220\u9664(\u6839\u636e\u6587\u4ef6\u7684\u521b\u5efa\u65f6\u95f4).\u4e3a\u4e86\u907f\u514d\u5220\u9664\u6587\u4ef6\u65f6\u4ecd\u7136\u6709read\u64cd\u4f5c(consumer\u6d88\u8d39),\u91c7\u53d6copy-on-write\u65b9\u5f0f.<\/div>\n
<\/div>\n
\u00a0 \u00a0 8\u3001\u5206\u914d<\/div>\n
\u00a0 \u00a0 kafka\u4f7f\u7528zookeeper\u6765\u5b58\u50a8\u4e00\u4e9bmeta\u4fe1\u606f,\u5e76\u4f7f\u7528\u4e86zookeeper watch\u673a\u5236\u6765\u53d1\u73b0meta\u4fe1\u606f\u7684\u53d8\u66f4\u5e76\u4f5c\u51fa\u76f8\u5e94\u7684\u52a8\u4f5c(\u6bd4\u5982consumer\u5931\u6548,\u89e6\u53d1\u8d1f\u8f7d\u5747\u8861\u7b49)<\/div>\n
\u00a0 \u00a0 1) Broker node registry: \u5f53\u4e00\u4e2akafkabroker\u542f\u52a8\u540e,\u9996\u5148\u4f1a\u5411zookeeper\u6ce8\u518c\u81ea\u5df1\u7684\u8282\u70b9\u4fe1\u606f(\u4e34\u65f6znode),\u540c\u65f6\u5f53broker\u548czookeeper\u65ad\u5f00\u8fde\u63a5\u65f6,\u6b64znode\u4e5f\u4f1a\u88ab\u5220\u9664.<\/div>\n
\u00a0 \u00a0 \u683c\u5f0f: \/broker\/ids\/[0…N]\u00a0 \u00a0–>host:port;\u5176\u4e2d[0..N]\u8868\u793abroker id,\u6bcf\u4e2abroker\u7684\u914d\u7f6e\u6587\u4ef6\u4e2d\u90fd\u9700\u8981\u6307\u5b9a\u4e00\u4e2a\u6570\u5b57\u7c7b\u578b\u7684id(\u5168\u5c40\u4e0d\u53ef\u91cd\u590d),znode\u7684\u503c\u4e3a\u6b64broker\u7684host:port\u4fe1\u606f.<\/div>\n
\u00a0 \u00a0 2) Broker Topic Registry: \u5f53\u4e00\u4e2abroker\u542f\u52a8\u65f6,\u4f1a\u5411zookeeper\u6ce8\u518c\u81ea\u5df1\u6301\u6709\u7684topic\u548cpartitions\u4fe1\u606f,\u4ecd\u7136\u662f\u4e00\u4e2a\u4e34\u65f6znode.<\/div>\n
\u00a0 \u00a0 \u683c\u5f0f: \/broker\/topics\/[topic]\/[0…N]\u00a0\u00a0\u5176\u4e2d[0..N]\u8868\u793apartition\u7d22\u5f15\u53f7.<\/div>\n
\u00a0 \u00a0 3) Consumer and Consumer group: \u6bcf\u4e2aconsumer\u5ba2\u6237\u7aef<\/a>\u88ab\u521b\u5efa\u65f6,\u4f1a\u5411zookeeper\u6ce8\u518c\u81ea\u5df1\u7684\u4fe1\u606f;\u6b64\u4f5c\u7528\u4e3b\u8981\u662f\u4e3a\u4e86”\u8d1f\u8f7d\u5747\u8861”.<\/span><\/div>\n
\u00a0 \u00a0 \u4e00\u4e2agroup\u4e2d\u7684\u591a\u4e2aconsumer\u53ef\u4ee5\u4ea4\u9519\u7684\u6d88\u8d39\u4e00\u4e2atopic\u7684\u6240\u6709partitions;\u7b80\u800c\u8a00\u4e4b,\u4fdd\u8bc1\u6b64topic\u7684\u6240\u6709partitions\u90fd\u80fd\u88ab\u6b64group\u6240\u6d88\u8d39,\u4e14\u6d88\u8d39\u65f6\u4e3a\u4e86\u6027\u80fd\u8003\u8651,\u8ba9partition\u76f8\u5bf9\u5747\u8861\u7684\u5206\u6563\u5230\u6bcf\u4e2aconsumer\u4e0a.<\/div>\n
\u00a0 \u00a0 4) Consumer id Registry: \u6bcf\u4e2aconsumer\u90fd\u6709\u4e00\u4e2a\u552f\u4e00\u7684ID(host:uuid,\u53ef\u4ee5\u901a\u8fc7\u914d\u7f6e\u6587\u4ef6\u6307\u5b9a,\u4e5f\u53ef\u4ee5\u7531\u7cfb\u7edf\u751f\u6210),\u6b64id\u7528\u6765\u6807\u8bb0\u6d88\u8d39\u8005\u4fe1\u606f.<\/div>\n
\u00a0 \u00a0 \u683c\u5f0f:\/consumers\/[group_id]\/ids\/[consumer_id]<\/div>\n
\u00a0 \u00a0 \u4ecd\u7136\u662f\u4e00\u4e2a\u4e34\u65f6\u7684znode,\u6b64\u8282\u70b9\u7684\u503c\u4e3a{“topic_name”:#streams…},\u5373\u8868\u793a\u6b64consumer\u76ee\u524d\u6240\u6d88\u8d39\u7684topic + partitions\u5217\u8868.<\/div>\n
\u00a0 \u00a0 5) Consumer offset Tracking: \u7528\u6765\u8ddf\u8e2a\u6bcf\u4e2aconsumer\u76ee\u524d\u6240\u6d88\u8d39\u7684partition\u4e2d\u6700\u5927\u7684offset.<\/div>\n
\u00a0 \u00a0 \u683c\u5f0f:\/consumers\/[group_id]\/offsets\/[topic]\/[broker_id-partition_id]–>offset_value<\/div>\n
\u00a0 \u00a0 \u6b64znode\u4e3a\u6301\u4e45\u8282\u70b9,\u53ef\u4ee5\u770b\u51faoffset\u8ddfgroup_id\u6709\u5173,\u4ee5\u8868\u660e\u5f53group\u4e2d\u4e00\u4e2a\u6d88\u8d39\u8005\u5931\u6548,\u5176\u4ed6consumer\u53ef\u4ee5\u7ee7\u7eed\u6d88\u8d39.<\/div>\n
\u00a0 \u00a0 6) Partition Owner registry: \u7528\u6765\u6807\u8bb0partition\u88ab\u54ea\u4e2aconsumer\u6d88\u8d39.\u4e34\u65f6znode<\/div>\n
\u00a0 \u00a0 \u683c\u5f0f:\/consumers\/[group_id]\/owners\/[topic]\/[broker_id-partition_id]–>consumer_node_id\u5f53consumer\u542f\u52a8\u65f6,\u6240\u89e6\u53d1\u7684\u64cd\u4f5c:<\/div>\n
\u00a0 \u00a0 A) \u9996\u5148\u8fdb\u884c”Consumer id Registry”;<\/div>\n
\u00a0 \u00a0 B) \u7136\u540e\u5728”Consumer id Registry”\u8282\u70b9\u4e0b\u6ce8\u518c\u4e00\u4e2awatch\u7528\u6765\u76d1\u542c\u5f53\u524dgroup\u4e2d\u5176\u4ed6consumer\u7684”leave”\u548c”join”;\u53ea\u8981\u6b64znode path\u4e0b\u8282\u70b9\u5217\u8868\u53d8\u66f4,\u90fd\u4f1a\u89e6\u53d1\u6b64group\u4e0bconsumer\u7684\u8d1f\u8f7d\u5747\u8861.(\u6bd4\u5982\u4e00\u4e2aconsumer\u5931\u6548,\u90a3\u4e48\u5176\u4ed6consumer\u63a5\u7ba1partitions).<\/div>\n
\u00a0 \u00a0 C) \u5728”Broker id registry”\u8282\u70b9\u4e0b,\u6ce8\u518c\u4e00\u4e2awatch\u7528\u6765\u76d1\u542cbroker\u7684\u5b58\u6d3b\u60c5\u51b5;\u5982\u679cbroker\u5217\u8868\u53d8\u66f4,\u5c06\u4f1a\u89e6\u53d1\u6240\u6709\u7684groups\u4e0b\u7684consumer\u91cd\u65b0balance.<\/div>\n
<ignore_js_op>\"\"<\/div>\n
\u00a0 \u00a0 1) Producer\u7aef\u4f7f\u7528zookeeper\u7528\u6765”\u53d1\u73b0”broker\u5217\u8868,\u4ee5\u53ca\u548cTopic\u4e0b\u6bcf\u4e2apartition leader\u5efa\u7acbsocket\u8fde\u63a5\u5e76\u53d1\u9001\u6d88\u606f.<\/div>\n
\u00a0 \u00a0 2) Broker\u7aef\u4f7f\u7528zookeeper\u7528\u6765\u6ce8\u518cbroker\u4fe1\u606f,\u5df2\u7ecf\u76d1\u6d4bpartitionleader\u5b58\u6d3b\u6027.<\/div>\n
\u00a0 \u00a0 3) Consumer\u7aef\u4f7f\u7528zookeeper\u7528\u6765\u6ce8\u518cconsumer\u4fe1\u606f,\u5176\u4e2d\u5305\u62ecconsumer\u6d88\u8d39\u7684partition\u5217\u8868\u7b49,\u540c\u65f6\u4e5f\u7528\u6765\u53d1\u73b0broker\u5217\u8868,\u5e76\u548cpartition leader\u5efa\u7acbsocket\u8fde\u63a5,\u5e76\u83b7\u53d6\u6d88\u606f.<\/div>\n
<\/div>\n
\u56db\u3001\u4e3b\u8981\u914d\u7f6e<\/div>\n
<\/div>\n
\u00a0 \u00a0 1\u3001Broker\u914d\u7f6e<\/div>\n

 <\/p>\n

<ignore_js_op>\"\"<\/div>\n

 <\/p>\n

\u00a0 \u00a0 2.Consumer\u4e3b\u8981\u914d\u7f6e<\/div>\n

 <\/p>\n

<ignore_js_op>\"\"<\/div>\n

 <\/p>\n

3.Producer\u4e3b\u8981\u914d\u7f6e<\/div>\n

 <\/p>\n

<ignore_js_op>\"\"<\/div>\n

 <\/p>\n

<\/div>\n
\u4ee5\u4e0a\u662f\u5173\u4e8ekafka\u4e00\u4e9b\u57fa\u7840\u8bf4\u660e\uff0c\u5728\u5176\u4e2d\u6211\u4eec\u77e5\u9053\u5982\u679c\u8981kafka\u6b63\u5e38\u8fd0\u884c\uff0c\u5fc5\u987b\u914d\u7f6ezookeeper\uff0c\u5426\u5219\u65e0\u8bba\u662fkafka\u96c6\u7fa4\u8fd8\u662f\u5ba2\u6237\u7aef<\/a>\u7684\u751f\u5b58\u8005\u548c\u6d88\u8d39\u8005\u90fd\u65e0\u6cd5\u6b63\u5e38\u7684\u5de5\u4f5c\u7684\uff0c\u4ee5\u4e0b\u662f\u5bf9zookeeper\u8fdb\u884c\u4e00\u4e9b\u7b80\u5355\u7684\u4ecb\u7ecd\uff1a<\/span><\/div>\n

 <\/p>\n

\u4e94\u3001zookeeper\u96c6\u7fa4<\/div>\n
\u00a0 \u00a0 zookeeper\u662f\u4e00\u4e2a\u4e3a\u5206\u5e03\u5f0f\u5e94\u7528\u63d0\u4f9b\u4e00\u81f4\u6027\u670d\u52a1\u7684\u8f6f\u4ef6\uff0c\u5b83\u662f\u5f00\u6e90\u7684Hadoop\u9879\u76ee\u7684\u4e00\u4e2a\u5b50\u9879\u76ee\uff0c\u5e76\u6839\u636egoogle\u53d1\u8868\u7684\u4e00\u7bc7\u8bba\u6587\u6765\u5b9e\u73b0\u7684\u3002zookeeper\u4e3a\u5206\u5e03\u5f0f\u7cfb\u7edf\u63d0\u4f9b\u4e86\u9ad8\u7b11\u4e14\u6613\u4e8e\u4f7f\u7528\u7684\u534f\u540c\u670d\u52a1\uff0c\u5b83\u53ef\u4ee5\u4e3a\u5206\u5e03\u5f0f\u5e94\u7528\u63d0\u4f9b\u76f8\u5f53\u591a\u7684\u670d\u52a1\uff0c\u8bf8\u5982\u7edf\u4e00\u547d\u540d\u670d\u52a1\uff0c\u914d\u7f6e\u7ba1\u7406\uff0c\u72b6\u6001\u540c\u6b65\u548c\u7ec4\u670d\u52a1\u7b49\u3002zookeeper\u63a5\u53e3\u7b80\u5355\uff0c\u6211\u4eec\u4e0d\u5fc5\u8fc7\u591a\u5730\u7ea0\u7ed3\u5728\u5206\u5e03\u5f0f\u7cfb\u7edf\u7f16\u7a0b<\/a>\u96be\u4e8e\u5904\u7406\u7684\u540c\u6b65\u548c\u4e00\u81f4\u6027\u95ee\u9898\u4e0a\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528zookeeper\u63d0\u4f9b\u7684\u73b0\u6210(off-the-shelf)\u670d\u52a1\u6765\u5b9e\u73b0\u6765\u5b9e\u73b0\u5206\u5e03\u5f0f\u7cfb\u7edf\u989d\u914d\u7f6e\u7ba1\u7406\uff0c\u7ec4\u7ba1\u7406\uff0cLeader\u9009\u4e3e\u7b49\u529f\u80fd\u3002<\/span><\/div>\n
\u00a0 \u00a0 zookeeper\u96c6\u7fa4\u7684\u5b89\u88c5,\u51c6\u5907\u4e09\u53f0\u670d\u52a1\u5668server1:192.168.0.1,server2:192.168.0.2,<\/div>\n
\u00a0 \u00a0 server3:192.168.0.3.<\/div>\n
\u00a0 \u00a0 1)\u4e0b\u8f7dzookeeper<\/div>\n
\u00a0 \u00a0 \u5230http:\/\/zookeeper.apache.org\/releases.html<\/a>\u53bb\u4e0b\u8f7d\u6700\u65b0\u7248\u672cZookeeper-3.4.5\u7684\u5b89\u88c5\u5305zookeeper-3.4.5.tar.gz.\u5c06\u6587\u4ef6\u4fdd\u5b58server1\u7684~\u76ee\u5f55\u4e0b<\/div>\n
\u00a0 \u00a0 2)\u5b89\u88c5zookeeper<\/div>\n
\u00a0 \u00a0 \u5148\u5728\u670d\u52a1\u5668server<\/a>\u5206\u522b\u6267\u884ca-c\u6b65\u9aa4<\/span><\/div>\n
\u00a0 \u00a0 a)\u89e3\u538b<\/div>\n
\u00a0 \u00a0 tar -zxvf zookeeper-3.4.5.tar.gz<\/div>\n
\u00a0 \u00a0 \u89e3\u538b\u5b8c\u6210\u540e\u5728\u76ee\u5f55~\u4e0b\u4f1a\u53d1\u73b0\u591a\u51fa\u4e00\u4e2a\u76ee\u5f55zookeeper-3.4.5,\u91cd\u65b0\u547d\u4ee4\u4e3azookeeper<\/div>\n
\u00a0 \u00a0 b\uff09\u914d\u7f6e<\/div>\n
\u00a0 \u00a0 \u5c06conf\/zoo_sample.cfg\u62f7\u8d1d\u4e00\u4efd\u547d\u540d\u4e3azoo.cfg\uff0c\u4e5f\u653e\u5728conf\u76ee\u5f55\u4e0b\u3002\u7136\u540e\u6309\u7167\u5982\u4e0b\u503c\u4fee\u6539\u5176\u4e2d\u7684\u914d\u7f6e\uff1a<\/div>\n
<\/div>\n
\u00a0 \u00a0 # The number of milliseconds of each tick<\/div>\n
\u00a0 \u00a0 tickTime=2000<\/div>\n
\u00a0 \u00a0 # The number of ticks that the initial<\/div>\n
\u00a0 \u00a0 # synchronization phase can take<\/div>\n
\u00a0 \u00a0 initLimit=10<\/div>\n
\u00a0 \u00a0 # The number of ticks that can pass between<\/div>\n
\u00a0 \u00a0 # sending a request and getting an acknowledgement<\/div>\n
\u00a0 \u00a0 syncLimit=5<\/div>\n
\u00a0 \u00a0 # the directory where the snapshot is stored.<\/div>\n
\u00a0 \u00a0 # do not use \/tmp for storage, \/tmp here is just<\/div>\n
\u00a0 \u00a0 # example sakes.<\/div>\n
\u00a0 \u00a0 dataDir=\/home\/wwb\/zookeeper \/data<\/div>\n
\u00a0 \u00a0 dataLogDir=\/home\/wwb\/zookeeper\/logs<\/div>\n
\u00a0 \u00a0 # the port at which the clients will connect<\/div>\n
\u00a0 \u00a0 clientPort=2181<\/div>\n
\u00a0 \u00a0 #<\/div>\n
\u00a0 \u00a0 # Be sure to read the maintenance section of the<\/div>\n
\u00a0 \u00a0 # administrator guide before turning on autopurge.<\/div>\n
\u00a0 \u00a0 #http:\/\/zookeeper.apache.org\/doc\/ … html#sc_maintenance<\/a><\/div>\n
\u00a0 \u00a0 #<\/div>\n
\u00a0 \u00a0 # The number of snapshots to retain in dataDir<\/div>\n
\u00a0 \u00a0 #autopurge.snapRetainCount=3<\/div>\n
\u00a0 \u00a0 # Purge task interval in hours<\/div>\n
\u00a0 \u00a0 # Set to “0” to disable auto purge feature<\/div>\n
\u00a0 \u00a0 #autopurge.purgeInterval=1<\/div>\n
\u00a0 \u00a0 server.1=192.168.0.1:3888:4888<\/div>\n
\u00a0 \u00a0 server.2=192.168.0.2:3888:4888<\/div>\n
\u00a0 \u00a0\u00a0server<\/a>.3=192.168.0.3:3888:4888<\/span><\/div>\n
\u00a0 \u00a0 tickTime\uff1a\u8fd9\u4e2a\u65f6\u95f4\u662f\u4f5c\u4e3a Zookeeper \u670d\u52a1\u5668\u4e4b\u95f4\u6216\u5ba2\u6237\u7aef\u4e0e\u670d\u52a1\u5668\u4e4b\u95f4\u7ef4\u6301\u5fc3\u8df3\u7684\u65f6\u95f4\u95f4\u9694\uff0c\u4e5f\u5c31\u662f\u6bcf\u4e2a tickTime \u65f6\u95f4\u5c31\u4f1a\u53d1\u9001\u4e00\u4e2a\u5fc3\u8df3\u3002<\/div>\n
\u00a0 \u00a0 dataDir\uff1a\u987e\u540d\u601d\u4e49\u5c31\u662f Zookeeper \u4fdd\u5b58\u6570\u636e\u7684\u76ee\u5f55\uff0c\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0cZookeeper \u5c06\u5199\u6570\u636e\u7684\u65e5\u5fd7\u6587\u4ef6\u4e5f\u4fdd\u5b58\u5728\u8fd9\u4e2a\u76ee\u5f55\u91cc\u3002<\/div>\n
\u00a0 \u00a0 clientPort\uff1a\u8fd9\u4e2a\u7aef\u53e3\u5c31\u662f\u5ba2\u6237\u7aef\u8fde\u63a5 Zookeeper \u670d\u52a1\u5668\u7684\u7aef\u53e3\uff0cZookeeper \u4f1a\u76d1\u542c\u8fd9\u4e2a\u7aef\u53e3\uff0c\u63a5\u53d7\u5ba2\u6237\u7aef\u7684\u8bbf\u95ee\u8bf7\u6c42\u3002<\/div>\n
\u00a0 \u00a0 initLimit\uff1a\u8fd9\u4e2a\u914d\u7f6e\u9879\u662f\u7528\u6765\u914d\u7f6e Zookeeper \u63a5\u53d7\u5ba2\u6237\u7aef<\/a>\uff08\u8fd9\u91cc\u6240\u8bf4\u7684\u5ba2\u6237\u7aef\u4e0d\u662f\u7528\u6237\u8fde\u63a5 Zookeeper \u670d\u52a1\u5668\u7684\u5ba2\u6237\u7aef\uff0c\u800c\u662f Zookeeper \u670d\u52a1\u5668\u96c6\u7fa4\u4e2d\u8fde\u63a5\u5230 Leader \u7684 Follower \u670d\u52a1\u5668\uff09\u521d\u59cb\u5316\u8fde\u63a5\u65f6\u6700\u957f\u80fd\u5fcd\u53d7\u591a\u5c11\u4e2a\u5fc3\u8df3\u65f6\u95f4\u95f4\u9694\u6570\u3002\u5f53\u5df2\u7ecf\u8d85\u8fc7 5\u4e2a\u5fc3\u8df3\u7684\u65f6\u95f4\uff08\u4e5f\u5c31\u662f tickTime\uff09\u957f\u5ea6\u540e Zookeeper \u670d\u52a1\u5668\u8fd8\u6ca1\u6709\u6536\u5230\u5ba2\u6237\u7aef\u7684\u8fd4\u56de\u4fe1\u606f\uff0c\u90a3\u4e48\u8868\u660e\u8fd9\u4e2a\u5ba2\u6237\u7aef\u8fde\u63a5\u5931\u8d25\u3002\u603b\u7684\u65f6\u95f4\u957f\u5ea6\u5c31\u662f 5*2000=10 \u79d2<\/span><\/div>\n
\u00a0 \u00a0 syncLimit\uff1a\u8fd9\u4e2a\u914d\u7f6e\u9879\u6807\u8bc6 Leader \u4e0eFollower \u4e4b\u95f4\u53d1\u9001\u6d88\u606f\uff0c\u8bf7\u6c42\u548c\u5e94\u7b54\u65f6\u95f4\u957f\u5ea6\uff0c\u6700\u957f\u4e0d\u80fd\u8d85\u8fc7\u591a\u5c11\u4e2a tickTime \u7684\u65f6\u95f4\u957f\u5ea6\uff0c\u603b\u7684\u65f6\u95f4\u957f\u5ea6\u5c31\u662f2*2000=4 \u79d2<\/div>\n
\u00a0 \u00a0 server.A=B\uff1aC\uff1aD\uff1a\u5176\u4e2d A \u662f\u4e00\u4e2a\u6570\u5b57\uff0c\u8868\u793a\u8fd9\u4e2a\u662f\u7b2c\u51e0\u53f7\u670d\u52a1\u5668\uff1bB \u662f\u8fd9\u4e2a\u670d\u52a1\u5668\u7684 ip \u5730\u5740\uff1bC \u8868\u793a\u7684\u662f\u8fd9\u4e2a\u670d\u52a1\u5668\u4e0e\u96c6\u7fa4\u4e2d\u7684 Leader \u670d\u52a1\u5668\u4ea4\u6362\u4fe1\u606f\u7684\u7aef\u53e3\uff1bD \u8868\u793a\u7684\u662f\u4e07\u4e00\u96c6\u7fa4\u4e2d\u7684 Leader \u670d\u52a1\u5668\u6302\u4e86\uff0c\u9700\u8981\u4e00\u4e2a\u7aef\u53e3\u6765\u91cd\u65b0\u8fdb\u884c\u9009\u4e3e\uff0c\u9009\u51fa\u4e00\u4e2a\u65b0\u7684 Leader\uff0c\u800c\u8fd9\u4e2a\u7aef\u53e3\u5c31\u662f\u7528\u6765\u6267\u884c\u9009\u4e3e\u65f6\u670d\u52a1\u5668\u76f8\u4e92\u901a\u4fe1\u7684\u7aef\u53e3\u3002\u5982\u679c\u662f\u4f2a\u96c6\u7fa4\u7684\u914d\u7f6e\u65b9\u5f0f\uff0c\u7531\u4e8e B \u90fd\u662f\u4e00\u6837\uff0c\u6240\u4ee5\u4e0d\u540c\u7684 Zookeeper \u5b9e\u4f8b\u901a\u4fe1\u7aef\u53e3\u53f7\u4e0d\u80fd\u4e00\u6837\uff0c\u6240\u4ee5\u8981\u7ed9\u5b83\u4eec\u5206\u914d\u4e0d\u540c\u7684\u7aef\u53e3\u53f7<\/div>\n
\u6ce8\u610f:dataDir,dataLogDir\u4e2d\u7684wwb\u662f\u5f53\u524d\u767b\u5f55\u7528\u6237\u540d\uff0cdata\uff0clogs\u76ee\u5f55\u5f00\u59cb\u662f\u4e0d\u5b58\u5728\uff0c\u9700\u8981\u4f7f\u7528mkdir\u547d\u4ee4\u521b\u5efa\u76f8\u5e94\u7684\u76ee\u5f55\u3002\u5e76\u4e14\u5728\u8be5\u76ee\u5f55\u4e0b\u521b\u5efa\u6587\u4ef6myid,serve1,server2,server3\u8be5\u6587\u4ef6\u5185\u5bb9\u5206\u522b\u4e3a1,2,3\u3002<\/div>\n
\u9488\u5bf9\u670d\u52a1\u5668server2,server3\u53ef\u4ee5\u5c06server1\u590d\u5236\u5230\u76f8\u5e94\u7684\u76ee\u5f55\uff0c\u4e0d\u8fc7\u9700\u8981\u6ce8\u610fdataDir,dataLogDir\u76ee\u5f55,\u5e76\u4e14\u6587\u4ef6myid\u5185\u5bb9\u5206\u522b\u4e3a2,3<\/div>\n
\u00a0 \u00a0 3)\u4f9d\u6b21\u542f\u52a8server<\/a>1\uff0cserver2,server3\u7684zookeeper.<\/span><\/div>\n
\u00a0 \u00a0 \/home\/wwb\/zookeeper\/bin\/zkServer.sh start,\u51fa\u73b0\u7c7b\u4f3c\u4ee5\u4e0b\u5185\u5bb9<\/div>\n
\u00a0 \u00a0 JMX enabled by default<\/div>\n
\u00a0 \u00a0 Using config: \/home\/wwb\/zookeeper\/bin\/..\/conf\/zoo.cfg<\/div>\n
\u00a0 \u00a0 Starting zookeeper … STARTED<\/div>\n
\u00a0 \u00a04) \u6d4b\u8bd5zookeeper\u662f\u5426\u6b63\u5e38\u5de5\u4f5c\uff0c\u5728server1\u4e0a\u6267\u884c\u4ee5\u4e0b\u547d\u4ee4<\/div>\n
\u00a0 \u00a0 \/home\/wwb\/zookeeper\/bin\/zkCli.sh -server192.168.0.2:2181,\u51fa\u73b0\u7c7b\u4f3c\u4ee5\u4e0b\u5185\u5bb9<\/div>\n
\u00a0 \u00a0 JLine support is enabled<\/div>\n
\u00a0 \u00a0 2013-11-27 19:59:40,560 – INFO\u00a0 \u00a0\u00a0 \u00a0[main-SendThread(localhost.localdomain:2181):ClientCnxn$SendThread@736]- Session\u00a0 \u00a0establishmentcomplete on\u00a0server<\/a>\u00a0localhost.localdomain\/127.0.0.1:2181, sessionid =\u00a0 \u00a0 0x1429cdb49220000, negotiatedtimeout = 30000<\/span><\/div>\n
<\/div>\n
\u00a0 \u00a0 WATCHER::<\/div>\n
<\/div>\n
\u00a0 \u00a0 WatchedEvent state:SyncConnected type:None path:null<\/div>\n
\u00a0 \u00a0 [zk: 127.0.0.1:2181(CONNECTED) 0] [root@localhostzookeeper2]#<\/div>\n
\u00a0 \u00a0 \u5373\u4ee3\u8868\u96c6\u7fa4\u6784\u5efa\u6210\u529f\u4e86,\u5982\u679c\u51fa\u73b0\u9519\u8bef\u90a3\u5e94\u8be5\u662f\u7b2c\u4e09\u90e8\u65f6\u6ca1\u6709\u542f\u52a8\u597d\u96c6\u7fa4\uff0c<\/div>\n
\u8fd0\u884c\uff0c\u5148\u5229\u7528<\/div>\n
\u00a0 \u00a0 ps aux | grep zookeeper\u67e5\u770b\u662f\u5426\u6709\u76f8\u5e94\u7684\u8fdb\u7a0b\u7684\uff0c\u6ca1\u6709\u8bdd\uff0c\u8bf4\u660e\u96c6\u7fa4\u542f\u52a8\u51fa\u73b0\u95ee\u9898\uff0c\u53ef\u4ee5\u5728\u6bcf\u4e2a\u670d\u52a1\u5668\u4e0a\u4f7f\u7528<\/div>\n
\u00a0 \u00a0 .\/home\/wwb\/zookeeper\/bin\/zkServer.sh stop\u3002\u518d\u4f9d\u6b21\u4f7f\u7528.\/home\/wwb\/zookeeper\/binzkServer.sh start\uff0c\u8fd9\u65f6\u5728\u6267\u884c4\u4e00\u822c\u662f\u6ca1\u6709\u95ee\u9898\uff0c\u5982\u679c\u8fd8\u662f\u6709\u95ee\u9898\uff0c\u90a3\u4e48\u5148stop\u518d\u5230bin\u7684\u4e0a\u7ea7\u76ee\u5f55\u6267\u884c.\/bin\/zkServer.shstart\u8bd5\u8bd5\u3002<\/div>\n
<\/div>\n
\u6ce8\u610f\uff1azookeeper\u96c6\u7fa4\u65f6\uff0czookeeper\u8981\u6c42\u534a\u6570\u4ee5\u4e0a\u7684\u673a\u5668\u53ef\u7528\uff0czookeeper\u624d\u80fd\u63d0\u4f9b\u670d\u52a1\u3002<\/div>\n
<\/div>\n
\u516d\u3001kafka\u96c6\u7fa4<\/div>\n
(\u5229\u7528\u4e0a\u9762server1,server2,server3,\u4e0b\u9762\u4ee5server1\u4e3a\u5b9e\u4f8b)<\/div>\n
\u00a0 \u00a0 1)\u4e0b\u8f7dkafka0.8(http:\/\/kafka.apache.org\/downloads.html<\/a>),\u4fdd\u5b58\u5230\u670d\u52a1\u5668\/home\/wwb\u76ee\u5f55\u4e0bkafka-0.8.0-beta1-src.tgz(kafka_2.8.0-0.8.0-beta1.tgz)<\/div>\n
\u00a0 \u00a0 2)\u89e3\u538b tar -zxvf kafka-0.8.0-beta1-src.tgz,\u4ea7\u751f\u6587\u4ef6\u5939kafka-0.8.0-beta1-src\u66f4\u6539\u4e3akafka01<\/div>\n
3)\u914d\u7f6e<\/div>\n
\u00a0 \u00a0 \u4fee\u6539kafka01\/config\/server<\/a>.properties,\u5176\u4e2dbroker.id,log.dirs,zookeeper.connect\u5fc5\u987b\u6839\u636e\u5b9e\u9645\u60c5\u51b5\u8fdb\u884c\u4fee\u6539\uff0c\u5176\u4ed6\u9879\u6839\u636e\u9700\u8981\u81ea\u884c\u659f\u914c\u3002\u5927\u81f4\u5982\u4e0b\uff1a<\/span><\/div>\n
\u00a0 \u00a0\u00a0\u00a0broker.id=1<\/div>\n
\u00a0 \u00a0\u00a0\u00a0port=9091<\/div>\n
\u00a0 \u00a0\u00a0\u00a0num.network.threads=2<\/div>\n
\u00a0 \u00a0\u00a0\u00a0num.io.threads=2<\/div>\n
\u00a0 \u00a0\u00a0\u00a0socket.send.buffer.bytes=1048576<\/div>\n
\u00a0 \u00a0 socket.receive.buffer.bytes=1048576<\/div>\n
\u00a0 \u00a0\u00a0\u00a0socket.request.max.bytes=104857600<\/div>\n
\u00a0 \u00a0 log.dir=.\/logs<\/div>\n
\u00a0 \u00a0 num.partitions=2<\/div>\n
\u00a0 \u00a0 log.flush.interval.messages=10000<\/div>\n
\u00a0 \u00a0 log.flush.interval.ms=1000<\/div>\n
\u00a0 \u00a0 log.retention.hours=168<\/div>\n
\u00a0 \u00a0 #log.retention.bytes=1073741824<\/div>\n
\u00a0 \u00a0 log.segment.bytes=536870912<\/div>\n
\u00a0 \u00a0 num.replica.fetchers=2<\/div>\n
\u00a0 \u00a0 log.cleanup.interval.mins=10<\/div>\n
\u00a0 \u00a0 zookeeper.connect=192.168.0.1:2181,192.168.0.2:2182,192.168.0.3:2183<\/div>\n
\u00a0 \u00a0 zookeeper.connection.timeout.ms=1000000<\/div>\n
\u00a0 \u00a0 kafka.metrics.polling.interval.secs=5<\/div>\n
\u00a0 \u00a0 kafka.metrics.reporters=kafka.metrics.KafkaCSVMetricsReporter<\/div>\n
\u00a0 \u00a0 kafka.csv.metrics.dir=\/tmp\/kafka_metrics<\/div>\n
\u00a0 \u00a0 kafka.csv.metrics.reporter.enabled=false<\/div>\n
<\/div>\n
4\uff09\u521d\u59cb\u5316\u56e0\u4e3akafka\u7528scala\u8bed\u8a00\u7f16\u5199\uff0c\u56e0\u6b64\u8fd0\u884ckafka\u9700\u8981\u9996\u5148\u51c6\u5907scala\u76f8\u5173\u73af\u5883\u3002<\/div>\n
\u00a0 \u00a0 > cd kafka01<\/div>\n
\u00a0 \u00a0 > .\/sbt update<\/div>\n
\u00a0 \u00a0 > .\/sbt package<\/div>\n
\u00a0 \u00a0 > .\/sbt assembly-package-dependency<\/div>\n
\u5728\u7b2c\u4e8c\u4e2a\u547d\u4ee4\u65f6\u53ef\u80fd\u9700\u8981\u4e00\u5b9a\u65f6\u95f4\uff0c\u7531\u4e8e\u8981\u4e0b\u8f7d\u66f4\u65b0\u4e00\u4e9b\u4f9d\u8d56\u5305\u3002\u6240\u4ee5\u8bf7\u5927\u5bb6 \u8010\u5fc3\u70b9\u3002<\/div>\n
5) \u542f\u52a8kafka01<\/div>\n
\u00a0 \u00a0 >JMX_PORT=9997 bin\/kafka-server<\/a>-start.sh config\/server.properties &\u00a0\u00a0<\/span><\/div>\n
a)kafka02\u64cd\u4f5c\u6b65\u9aa4\u4e0ekafka01\u96f7\u540c\uff0c\u4e0d\u540c\u7684\u5730\u65b9\u5982\u4e0b<\/div>\n
\u00a0 \u00a0 \u4fee\u6539kafka02\/config\/server.properties<\/div>\n
\u00a0 \u00a0 broker.id=2<\/div>\n
\u00a0 \u00a0 port=9092<\/div>\n
\u00a0 \u00a0 ##\u5176\u4ed6\u914d\u7f6e\u548ckafka-0\u4fdd\u6301\u4e00\u81f4<\/div>\n
\u00a0 \u00a0 \u542f\u52a8kafka02<\/div>\n
\u00a0 \u00a0 JMX_PORT=9998 bin\/kafka-server-start.shconfig\/server.properties &<\/div>\n
b)kafka03\u64cd\u4f5c\u6b65\u9aa4\u4e0ekafka01\u96f7\u540c\uff0c\u4e0d\u540c\u7684\u5730\u65b9\u5982\u4e0b<\/div>\n
\u00a0 \u00a0 \u4fee\u6539kafka03\/config\/server.properties<\/div>\n
\u00a0 \u00a0 broker.id=3<\/div>\n
\u00a0 \u00a0 port=9093<\/div>\n
\u00a0 \u00a0 ##\u5176\u4ed6\u914d\u7f6e\u548ckafka-0\u4fdd\u6301\u4e00\u81f4<\/div>\n
\u00a0 \u00a0 \u542f\u52a8kafka02<\/div>\n
\u00a0 \u00a0 JMX_PORT=9999 bin\/kafka-server<\/a>-start.shconfig\/server.properties &<\/span><\/div>\n
6)\u521b\u5efaTopic(\u5305\u542b\u4e00\u4e2a\u5206\u533a\uff0c\u4e09\u4e2a\u526f\u672c)<\/div>\n
\u00a0 \u00a0 >bin\/kafka-create-topic.sh–zookeeper 192.168.0.1:2181 –replica 3 –partition 1 –topicmy-replicated-topic<\/div>\n
7)\u67e5\u770btopic\u60c5\u51b5<\/div>\n
\u00a0 \u00a0 >bin\/kafka-list-top.sh –zookeeper 192.168.0.1:2181<\/div>\n
\u00a0 \u00a0 topic: my-replicated-topic\u00a0\u00a0partition: 0 leader: 1\u00a0\u00a0replicas: 1,2,0\u00a0\u00a0isr: 1,2,0<\/div>\n
8)\u521b\u5efa\u53d1\u9001\u8005<\/div>\n
\u00a0 \u00a0>bin\/kafka-console-producer.sh–broker-list 192.168.0.1:9091 –topic my-replicated-topic<\/div>\n
\u00a0 \u00a0 my test message1<\/div>\n
\u00a0 \u00a0 my test message2<\/div>\n
\u00a0 \u00a0 ^C<\/div>\n
9)\u521b\u5efa\u6d88\u8d39\u8005<\/div>\n
\u00a0 \u00a0 >bin\/kafka-console-consumer.sh –zookeeper127.0.0.1:2181 –from-beginning –topic my-replicated-topic<\/div>\n
\u00a0 \u00a0 …<\/div>\n
\u00a0 \u00a0 my test message1<\/div>\n
\u00a0 \u00a0 my test message2<\/div>\n
^C<\/div>\n
10)\u6740\u6389server1\u4e0a\u7684broker<\/div>\n
\u00a0\u00a0>pkill -9 -f config\/server<\/a>.properties<\/span><\/div>\n
11)\u67e5\u770btopic<\/div>\n
\u00a0\u00a0>bin\/kafka-list-top.sh –zookeeper192.168.0.1:2181<\/div>\n
\u00a0\u00a0topic: my-replicated-topic\u00a0\u00a0partition: 0 leader: 1\u00a0\u00a0replicas: 1,2,0\u00a0\u00a0isr: 1,2,0<\/div>\n
\u53d1\u73b0topic\u8fd8\u6b63\u5e38\u7684\u5b58\u5728<\/div>\n
11\uff09\u521b\u5efa\u6d88\u8d39\u8005\uff0c\u770b\u662f\u5426\u80fd\u67e5\u8be2\u5230\u6d88\u606f<\/div>\n
\u00a0 \u00a0 >bin\/kafka-console-consumer.sh –zookeeper192.168.0.1:2181 –from-beginning –topic my-replicated-topic<\/div>\n
\u00a0 \u00a0 …<\/div>\n
\u00a0 \u00a0 my test message 1<\/div>\n
\u00a0 \u00a0 my test message 2<\/div>\n
\u00a0 \u00a0 ^C<\/div>\n
\u8bf4\u660e\u4e00\u5207\u90fd\u662f\u6b63\u5e38\u7684\u3002<\/div>\n
<\/div>\n
OK,\u4ee5\u4e0a\u5c31\u662f\u5bf9Kafka\u4e2a\u4eba\u7684\u7406\u89e3\uff0c\u4e0d\u5bf9\u4e4b\u5904\u8bf7\u5927\u5bb6\u53ca\u65f6\u6307\u51fa\u3002<\/div>\n
<\/div>\n
<\/div>\n
\u8865\u5145\u8bf4\u660e\uff1a<\/div>\n
1\u3001public Map<String, List<KafkaStream<byte[], byte[]>>> createMessageStreams(Map<String, Integer> topicCountMap)\uff0c\u5176\u4e2d\u8be5\u65b9\u6cd5\u7684\u53c2\u6570Map\u7684key\u4e3atopic\u540d\u79f0\uff0cvalue\u4e3atopic\u5bf9\u5e94\u7684\u5206\u533a\u6570\uff0c\u8b6c\u5982\u8bf4\u5982\u679c\u5728kafka\u4e2d\u4e0d\u5b58\u5728\u76f8\u5e94\u7684topic\u65f6\uff0c\u5219\u4f1a\u521b\u5efa\u4e00\u4e2atopic\uff0c\u5206\u533a\u6570\u4e3avalue\uff0c\u5982\u679c\u5b58\u5728\u7684\u8bdd\uff0c\u8be5\u5904\u7684value\u5219\u4e0d\u8d77\u4ec0\u4e48\u4f5c\u7528<\/div>\n

 <\/p>\n

2\u3001\u5173\u4e8e\u751f\u4ea7\u8005\u5411\u6307\u5b9a\u7684\u5206\u533a\u53d1\u9001\u6570\u636e\uff0c\u901a\u8fc7\u8bbe\u7f6epartitioner.class\u7684\u5c5e\u6027\u6765\u6307\u5b9a\u5411\u90a3\u4e2a\u5206\u533a\u53d1\u9001\u6570\u636e\uff0c\u5982\u679c\u81ea\u5df1\u6307\u5b9a\u5fc5\u987b\u7f16\u5199\u76f8\u5e94\u7684\u7a0b\u5e8f\uff0c\u9ed8\u8ba4\u662fkafka.producer.DefaultPartitioner,\u5206\u533a\u7a0b\u5e8f\u662f\u57fa\u4e8e\u6563\u5217\u7684\u952e\u3002<\/div>\n

 <\/p>\n

3\u3001\u5728\u591a\u4e2a\u6d88\u8d39\u8005\u8bfb\u53d6\u540c\u4e00\u4e2atopic\u7684\u6570\u636e\uff0c\u4e3a\u4e86\u4fdd\u8bc1\u6bcf\u4e2a\u6d88\u8d39\u8005\u8bfb\u53d6\u6570\u636e\u7684\u552f\u4e00\u6027\uff0c\u5fc5\u987b\u5c06\u8fd9\u4e9b\u6d88\u8d39\u8005group_id\u5b9a\u4e49\u4e3a\u540c\u4e00\u4e2a\u503c\uff0c\u8fd9\u6837\u5c31\u6784\u5efa\u4e86\u4e00\u4e2a\u7c7b\u4f3c\u961f\u5217\u7684\u6570\u636e\u7ed3\u6784\uff0c\u5982\u679c\u5b9a\u4e49\u4e0d\u540c\uff0c\u5219\u7c7b\u4f3c\u4e00\u79cd\u5e7f\u64ad\u7ed3\u6784\u7684\u3002<\/div>\n

 <\/p>\n

4\u3001\u5728consumerapi\u4e2d\uff0c\u53c2\u6570\u8bbe\u8ba1<\/a>\u5230\u6570\u5b57\u90e8\u5206\uff0c\u7c7b\u4f3cMap<String,Integer>,<\/span><\/div>\n
numStream,\u6307\u7684\u90fd\u662f\u5728topic\u4e0d\u5b58\u5728\u7684\u65f6\uff0c\u4f1a\u521b\u5efa\u4e00\u4e2atopic\uff0c\u5e76\u4e14\u5206\u533a\u4e2a\u6570\u4e3aInteger,numStream,\u6ce8\u610f\u5982\u679c\u6570\u5b57\u5927\u4e8ebroker\u7684\u914d\u7f6e\u4e2dnum.partitions\u5c5e\u6027\uff0c\u4f1a\u4ee5num.partitions\u4e3a\u4f9d\u636e\u521b\u5efa\u5206\u533a\u4e2a\u6570\u7684\u3002<\/div>\n

 <\/p>\n

5\u3001producerapi\uff0c\u8c03\u7528send\u65f6\uff0c\u5982\u679c\u4e0d\u5b58\u5728topic\uff0c\u4e5f\u4f1a\u521b\u5efatopic\uff0c\u5728\u8be5\u65b9\u6cd5\u4e2d\u6ca1\u6709\u63d0\u4f9b\u5206\u533a\u4e2a\u6570\u7684\u53c2\u6570\uff0c\u5728\u8fd9\u91cc\u5206\u533a\u4e2a\u6570\u662f\u7531\u670d\u52a1\u7aefbroker\u7684\u914d\u7f6e\u4e2dnum.partitions\u5c5e\u6027\u51b3\u5b9a\u7684<\/div>\n
<\/div>\n
\u5173\u4e8ekafka\u8bf4\u660e\u53ef\u4ee5\u53c2\u8003\uff1ahttp:\/\/kafka.apache.org\/documentation.html<\/a><\/div>\n
<\/div>\n
\u6587\u7ae0\u8f6c\u81ea\uff1ahttp:\/\/www.aboutyun.com\/thread-9341-1-1.html<\/div>\n","protected":false},"excerpt":{"rendered":"

\u95ee\u9898\u5bfc\u8bfb\uff1a 1.zookeeper\u5728kafka\u7684\u4f5c\u7528\u662f\u4ec0\u4e48\uff1f 2.kafka\u4e2d\u51e0\u4e4e\u4e0d\u5141\u8bb8\u5bf9\u6d88\u606f\u8fdb\u884c\u201c\u968f\u673a\u8bfb\u5199\u201d\u7684\u539f\u56e0\u662f\u4ec0\u4e48\uff1f 3.kafka\u96c6\u7fa4consumer\u548cproducer\u72b6\u6001\u4fe1\u606f\u662f\u5982\u4f55\u4fdd\u5b58\u7684\uff1f 4.partitions\u8bbe\u8ba1\u7684\u76ee\u7684\u7684\u6839\u672c\u539f\u56e0\u662f\u4ec0\u4e48\uff1f   \u4e00\u3001\u5165\u95e8 \u00a0 \u00a0 1\u3001\u7b80\u4ecb \u00a0 \u00a0 Kafka is a distributed,partitioned,replicated commit logservice\u3002\u5b83\u63d0\u4f9b\u4e86\u7c7b\u4f3c\u4e8eJMS\u7684\u7279\u6027\uff0c\u4f46\u662f\u5728\u8bbe\u8ba1\u5b9e\u73b0\u4e0a\u5b8c\u5168\u4e0d\u540c\uff0c\u6b64\u5916\u5b83\u5e76\u4e0d\u662fJMS\u89c4\u8303\u7684\u5b9e\u73b0\u3002kafka\u5bf9\u6d88\u606f\u4fdd\u5b58\u65f6\u6839\u636eTopic\u8fdb\u884c\u5f52\u7c7b\uff0c\u53d1\u9001\u6d88\u606f\u8005\u6210\u4e3aProducer,\u6d88\u606f\u63a5\u53d7\u8005\u6210\u4e3aConsumer,\u6b64\u5916kafka\u96c6\u7fa4\u6709\u591a\u4e2akafka\u5b9e\u4f8b\u7ec4\u6210\uff0c\u6bcf\u4e2a\u5b9e\u4f8b(server)\u6210\u4e3abroker\u3002\u65e0\u8bba\u662fkafka\u96c6\u7fa4\uff0c\u8fd8\u662fproducer\u548cconsumer\u90fd\u4f9d\u8d56\u4e8ezookeeper\u6765\u4fdd\u8bc1\u7cfb\u7edf\u53ef\u7528\u6027\u96c6\u7fa4\u4fdd\u5b58\u4e00\u4e9bmeta\u4fe1\u606f\u3002 <ignore_js_op> \u00a0 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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